From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Leo Yan <leo.yan@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
James Clark <james.clark@linaro.org>,
Yeoreum Yun <yeoreum.yun@arm.com>, Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Tamas Petz <tamas.petz@arm.com>,
Tamas Zsoldos <tamas.zsoldos@arm.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>
Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: Re: [PATCH 03/19] coresight: trbe: Remove buffer disabling in trbe_handle_overflow()
Date: Thu, 4 Dec 2025 18:01:53 +0530 [thread overview]
Message-ID: <92ab073c-c2fc-4218-a8c8-458a69619db7@arm.com> (raw)
In-Reply-To: <20251201-trbe_buffer_refactor_v1-1-v1-3-7da32b076b28@arm.com>
On 01/12/25 4:51 PM, Leo Yan wrote:
> When trbe_handle_overflow() runs, the buffer has already been disabled
> and drained, so the duplicate operation is unnecessary. Remove it.
>
> Signed-off-by: Leo Yan <leo.yan@arm.com>
> ---
> drivers/hwtracing/coresight/coresight-trbe.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
> index 2f44e4a65e0ee2b2c8fdd06a51ab01fc57f44a4e..f5597bd9b5fba9a8f5053d5823b03380fd468b5c 100644
> --- a/drivers/hwtracing/coresight/coresight-trbe.c
> +++ b/drivers/hwtracing/coresight/coresight-trbe.c
> @@ -1077,7 +1077,6 @@ static int trbe_handle_overflow(struct perf_output_handle *handle)
> * is able to detect this with a disconnected handle
> * (handle->event = NULL).
> */
> - trbe_drain_and_disable_local(buf->cpudata);
> *this_cpu_ptr(buf->cpudata->drvdata->handle) = NULL;
> return -EINVAL;
> }
>
Like the previous patch - trbe_drain_and_disable_local() would have run
if TRBE_FAULT_ACT_WRAP case is being handled via trbe_handle_overflow().
But please do mention these details in the commit message for things to
be clear and explicit.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
next prev parent reply other threads:[~2025-12-04 12:32 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-01 11:21 [PATCH 00/19] coresight: trbe: Support trigger and circle buffer modes Leo Yan
2025-12-01 11:21 ` [PATCH 01/19] coresight: trbe: Use helpers for checking errata Leo Yan
2025-12-04 12:08 ` Anshuman Khandual
2025-12-01 11:21 ` [PATCH 02/19] coresight: trbe: Remove redundant disable operation Leo Yan
2025-12-04 12:25 ` Anshuman Khandual
2025-12-01 11:21 ` [PATCH 03/19] coresight: trbe: Remove buffer disabling in trbe_handle_overflow() Leo Yan
2025-12-04 12:31 ` Anshuman Khandual [this message]
2025-12-01 11:21 ` [PATCH 04/19] coresight: trbe: Remove set_trbe_disabled() from the enable flow Leo Yan
2025-12-04 12:43 ` Anshuman Khandual
2025-12-04 13:25 ` Leo Yan
2025-12-01 11:21 ` [PATCH 05/19] coresight: trbe: Refactor status clearing Leo Yan
2025-12-04 12:57 ` Anshuman Khandual
2025-12-09 15:29 ` Leo Yan
2025-12-01 11:21 ` [PATCH 06/19] coresight: trbe: Refactor syndrome decoding Leo Yan
2025-12-02 11:06 ` Suzuki K Poulose
2025-12-02 14:24 ` Leo Yan
2025-12-09 13:17 ` James Clark
2025-12-09 16:06 ` Leo Yan
2025-12-05 4:10 ` Anshuman Khandual
2025-12-09 15:57 ` Leo Yan
2025-12-01 11:21 ` [PATCH 07/19] coresight: trbe: Refactor AUX flag setting Leo Yan
2025-12-02 11:15 ` Suzuki K Poulose
2025-12-02 14:21 ` Leo Yan
2025-12-09 13:37 ` James Clark
2025-12-10 15:43 ` Leo Yan
2025-12-12 14:50 ` James Clark
2025-12-12 15:27 ` Leo Yan
2025-12-12 15:52 ` James Clark
2025-12-01 11:21 ` [PATCH 08/19] coresight: trbe: Use PERF_AUX_FLAG_PARTIAL instead of PERF_AUX_FLAG_COLLISION Leo Yan
2025-12-05 4:28 ` Anshuman Khandual
2025-12-09 13:40 ` James Clark
2025-12-10 16:19 ` Leo Yan
2025-12-01 11:21 ` [PATCH 09/19] coresight: trbe: Add fault action argument to trbe_handle_overflow() Leo Yan
2025-12-01 11:22 ` [PATCH 10/19] coresight: trbe: Always check fault action when updating buffer Leo Yan
2025-12-02 12:00 ` Suzuki K Poulose
2025-12-01 11:22 ` [PATCH 11/19] coresight: trbe: Apply overwrite erratum for only wrap event Leo Yan
2025-12-02 12:05 ` Suzuki K Poulose
2025-12-02 16:56 ` Leo Yan
2025-12-02 17:12 ` Leo Yan
2025-12-01 11:22 ` [PATCH 12/19] coresight: trbe: Calculate size for buffer wrapping Leo Yan
2025-12-01 11:22 ` [PATCH 13/19] coresight: trbe: Remove misleading comment Leo Yan
2025-12-01 11:22 ` [PATCH 14/19] coresight: trbe: Refactor compute_trbe_buffer_limit() Leo Yan
2025-12-01 11:22 ` [PATCH 15/19] coresight: trbe: Add static key for bypassing trigger mode Leo Yan
2025-12-02 12:10 ` Suzuki K Poulose
2025-12-01 11:22 ` [PATCH 16/19] coresight: trbe: Support " Leo Yan
2025-12-01 11:22 ` [PATCH 17/19] coresight: trbe: Enable circle mode for snapshot Leo Yan
2025-12-01 11:22 ` [PATCH 18/19] coresight: trbe: Add kunit tests Leo Yan
2025-12-01 11:22 ` [PATCH 19/19] perf: cs-etm: Set watermark for AUX trace Leo Yan
2025-12-05 4:48 ` Anshuman Khandual
2025-12-09 14:54 ` James Clark
2025-12-10 2:22 ` Anshuman Khandual
2025-12-05 4:53 ` [PATCH 00/19] coresight: trbe: Support trigger and circle buffer modes Anshuman Khandual
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